Molding machine



(No Model.) 2 Sheets-Sheet 1.

J. WALKER. MOLDING MACHINE.

No. 246,049; Patehted Aug. 23,1881.

N. PETERS. Pmwumo mr. Wnhinghn. n.c.

(No Model.) 2 Sheets-Sheet 2.

' J. WALKER.

MOLDING MACHINE. No.'246,049. Patented Aug. 23,1881.

F"IIE-ISZE F-1E.I.- I

N. PEYERS. Phnlwulmgrupbm Wanhmglon. n. c

UNITED STATES PATENT Orrrca.

MOLDING- MACHINE.

SPECIFICATION forming part-of Letters Patent No. 246,049, dated August23, 1881.

Application filed January 8,1881. (NomodcI) I To all whom it mayconcern:

Be it known that 1, JOHN WALKER, of Indianapolis, in the county ofMarion and State of Indiana, have invented certain Improvements inMolding Machinery, of which the following is a specification; and I dohereby declare that in the same is contained afull,clear,andexactdescription of my said invention, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

This invention relates to certain improve ments in astriking-machine-that is to say, a

machine which is used to prepare the surfaces of the cope and dragsections of a mold' with out the employment of a pattern; and itconsists in a novel construction of certain parts of the machine, aswill hereinafter fully appear.

In the description of my improved moldstriking machine which followsreference is made to the accompanying drawings, forming a part hereof,and in which- Figure I is an exterior side view of the improved machine.Fig. II is a plan of the invention. Figs. III, IV, V, VI, VII, and VIIIare views ofparts of the machine, the latter five figures being on anenlarged scale.

Similar letters of reference indicate similar parts in all the views.

Ais the bed-plate of the machine,upon which the flasks are placed. Thebed-plate is provided with a series of pin-holes, a, into whichremovable pins b are inserted to sustain the flask B, the bottom ofwhich is faced so as to present a straight or true surface.

The bottom plate, 0, of the flask has a faced or true inner surface, andforms, with the flask, a truejoint; but its outer or lower surface isleft rough, and said plate is slotted where the pins 1) pass through it.By this means, if the bed-plate is level, the flask must also be level,

, without respect to the bottom plate of the flask.

the said frame and the collar of the pivotal column what I term aball-washer, c-that is to say, a washer having a spherical under surfacewhich admits of the overhanging part of the frame being slightlyelevated and depressed independently of the said column, as will bereadily understood by referring to Fig. VI of the drawings.

F is a hollow spindle adapted to turn freely in the hub of thespindle-frame E and about a central rod, G, which rests in a hole in thebed-plate. The upper end of the rod G passes through a cap, H, coveringthe portion of the spindle projecting above the spindle-frame; and thesaid rod, when adjusted to its place, is secured by means of a splittapered plug, (1, which is screwed into the cap by means of ahand-wheel, I. Ihe upper portion of the spindle F is threaded andprovided with a nut, K, having handles 0, whereby the spindle isadjusted vertically. One of the handles 0 is used to lock the nut K.

L is an arm projecting from the spindle F, to which the strike M issecured. The lower edge of the strike is the operative one, and whenrevolved with the central spindle forms either the cope or drag sectionof the mold, together with the prints for the circular cores, and, whenused in connection with a gear-molding machine, the seat for theteeth-block employed in that machine. The different strikes are shown inFigs; I and III of the drawings.

It will be understood that the cope and drag flasks are matched, andwhen fitted together form, with the contained sand and the cores, acomplete mold.

I claim as my invention- 1. In a mold'striking machine, a bedplateadapted for and having adjustable pins for centering and sustaining aflask, a revoluble central spindle-adapted for and having an arm tocarry a strike,.and means for effecting the vertical adjustment of thesaid spindle and strike, substantially as herein specified.

2. In amold-strikingmachine,a hollowrevoluble central spindle havingmeans whereby it may be vertically adjusted and looked, a central rodextending through the said hollow spindle, and supports for the upperand lower end of the said rod, substantially as herein specified.

3. In a mold-striking machine, a frame for stantially as and for thepurpose herein specifled.

5. In a mold-striking machine, the frame E, hollow spindle F, and cap H,combined with the central rod, G, the said rod having a split taperedscrew-plug, d, whereby the said rod may be locked within the said cap,substan- 2o tially as herein specified.

JOHN WALKER.

Witnesses:

FRED. K. SHEPARD, WM. G. WAssoN.

